{   pkgs,   lib,   config,   inputs,   ... }: {   
   env.GREET = "SpotDL devenv";   
   packages = [pkgs.spotdl pkgs.python313Packages.spotipy pkgs.python313Packages.flask pkgs.openssl pkgs.ngrok ];   
   
   scripts.hello.exec = ''echo hello from $GREET ! '';   
   
   scripts.craftcerts.exec = ''     
     mkdir -p ssl  # Use -p to avoid error if the directory exists     
     cd ssl          
     if [ ! -f ./openssl.cnf ]; then     
       echo "Creating certificates..."     
       openssl req -x509 -newkey rsa:2048 -keyout server.key -out server.cert -days 365 -nodes -config ../openssl.cnf > /dev/null  2>/dev/null
       exit 1     
     fi     
   '';   
   
   scripts.download.exec = ''
     ngrok http 8888 > /dev/null &
     python ./geturl.py > geturl_logfile
     url=$(cat -p geturl_logfile)  # Capture the output of geturl.py
    echo "STATEMENT AFTER GETURL"
     while true; do 
       if [ $? -eq 0 ]; then
         echo "SPOTDL ATTEMPT:"
         spotdl "$url" 
         break
       fi
       echo "Error downloading, retrying..." 
       sleep 2
     done
   ''; 
   
   enterShell = ''     
     hello         
     craftcerts     
     download   
   ''; 
}